.chat-frame{
    span{
        background-color: #fff;
        padding: 5px 8px;
        display: inline-block;
        border-radius: 4px;
        margin:10px 0 10px 10px;
        position: relative;
        white-space: pre;
    }
    span::after{
        content: '';
        border: 6px solid #ffffff00;
        position: absolute;
        width: 10px;
        height: 10px;
    }
}

.chat-frame.left{
    padding-left: 5px;
    span::after{
        border-right: 6px solid #fff;
        top: 0;
        bottom: 0;
        left: -12px;
        margin: auto;
    }
}


.chat-frame.bottom{
    padding-bottom: 5px;
    span::after{
        border-top: 6px solid #fff;
        bottom: -12px;
        left: 0;
        right: 0;
        margin: auto;
    }
}